Im surprised youre having bother on a practically new scooter, mine is a 2008 with nearly 19,000km on it and i havent had any real problems yet, just the usual little niggles and wear and tear. I imagine you'll lose a fair bit of cash on the trade in or sale of the a50 if you bought it new? I honestly believe they are decent scooters and pretty well built too, especially for the price, tho the Gillera does look nicer i admit.
Bet your problems are just minor defects and are easily fixed but if your hearts set on a Gillera...........